The area between two curves y = 1 - x and y = e^x from x= -1 to x=4 is?? 再问一题有关表面积的.. fond the volume under the surface f(x,y) = e^-y^2 and over the domain D which is hte region bounded by curves y = x ,x = 0 and y = 3 这两题我翻了一下补习班的题目也没找到类题..解法也没思绪 希望各位能帮忙一下..感激不尽^^ --

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